The outlet pressure of the waterway pressure reducing valve cannot be adjusted, why (the outlet pressure cannot be adjusted to 1 Bar)
Thread Content
The inlet pressure of the waterway pressure reducing valve is 8 BAR, and the outlet pressure is required to be reduced to 1 BAR, but it cannot be adjusted to 2 BAR. Even if the spring is removed, it can only be adjusted to 2 BAR. Please help to find out what is the reason why the outlet pressure cannot be adjusted? Product design issues, flow channel issues, valve core design issues, or other issues? ； Under the same conditions, the outlet pressure of other people's waterway pressure reducing valves can be adjusted to 0.8BAR. I beg you all online!
There may be several reasons why the outlet pressure of the waterway pressure reducing valve cannot be adjusted.: 1. The elasticity of the spring is too large. If the elasticity of the spring is too large, even if it is removed, it can only be adjusted to about 2BAR, and it needs to be replaced with a spring with suitable elasticity. 2. The valve core is not tightly sealed. If the valve core is not tightly sealed, part of the high-pressure water will flow back to the outlet side through the valve core, preventing the outlet pressure from being reduced. It is necessary to check whether the valve core and gasket are normal and repair or replace them. 3. The flow rate is too small. If the water flow rate is too small, the valve core and spring will not work fully, thus limiting the outlet pressure adjustment range. It is necessary to check whether there are any narrowings, turns, etc. in the water pipeline. If so, it is necessary to increase the diameter of the pipe or change the flow path. 4. Product design issues. If the product design of the waterway pressure reducing valve itself is defective, it will also cause the outlet pressure adjustment range to be limited. It may be necessary to replace the water line pressure reducing valve with another brand or model. It is recommended that you ask professional technicians to repair or replace the water line pressure reducing valve to ensure normal use. .
Adding an orifice plate in front of the pressure reducing valve to limit the flow can solve the problem.
What you mean is that the water hole at the water inlet is too large. The purpose of adding an orifice plate is to reduce the flow at the water inlet. Is this what it means?
If it’s the problem in point 3, take a look at my picture and see which part will have a significant effect if I change it.；